Use of scale inhibitors in hydraulic fracture fluids to prevent

Details Use of scale inhibitors in hydraulic fracture fluids to prevent Use of scale inhibitors in hydraulic fracture fluids to prevent

1991-08-30

1993-07-06

Suchfield, George A.

Wells

Processes

Material placed in pores of formation to treat resident...

166300, 166308, 166312, 252 8551, 252 8552, E21B 4312, E21B 4326

Patent

active

052245438

ABSTRACT:
Scale inhibitor is added to a cross-linked fracturing fluid as an integral part of the fracturing fluid. Preferred fracturing fluids are borate cross-linked and the preferred scale inhibitor is polyacrylate. In another embodiment of this invention, the fracturing fluid is prepared by adding a scale inhibitor to a fracturing fluid at a pH of between 8.5 and 10.5. In a third embodiment, the fracturing fluid prepared above is used to fracture subterranean formations. In a fourth embodiment, the fracturing fluid is used to pressurize a subterranean formation to break scale near the hydrocarbon wellbore.

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